ax g glovery



C. A. GLOVERy MECHANISM FOR BREAKING STEEL BARS.

APPUCATION man my 10. ms.

1 ,284, 2 Patented N mn: 1-2, v1 918..

INVENTUR MC%%M ATTORNEY UNITED STATES" PATENT OFFICE.

CHARLES, A. GLOVER, or snrPGElQBT. CONN CTICUT.

HANISM FOR EEAQKING BALLS- To all whom it may concern-.-

Be it known that I, GHARLns A. GLovER, a citizen of the United States, residing at Bridgeport, county of Fairfield, State of Connecticut, have invented an Improvement in Mechanism for Breaking Steel Bars, of-

which the following is a specification.

This invention is adapted for use wherever it is required-to break steel'bars into billets or blanks in the manufacture of various articles, for example shell bodies, the

- provide mechanism that will-fully meet the requirements by breaking blanks from a plurality of'steel bars successively at each, ac-

tuation of a hydraulic press, the bars beingprepared for breakingin the usualmanner, that is by. nicking or scor-ln with an oxyacetylene torch and'then chi ling.

With this and other objects in view, I

have devised the novel breaking mechanism which I will nowdescribe,,referring to-the accompanying drawing forming a part of this specification and'using reference char-' acters toindicate the several "parts.

Figure l is an elevation of a hydraulic press showing the application thereto of my novel breaking mechanism, the ram and die being in the raised'position;

Fig, 2, a View as seen from, the right in Fig. 1, and

Fig. 3 isa view on an enlarged scale, corresponding with Fig. 1, showing the die in the brea ng posi -io 1O d n tes the ramew r of a hyd pr ss, h ch. e of a y ord ry r p ferred] construction or design, 11' the ram,

which carries ahead 12 adaptedto slide on gui es forming apartni th rame work, a jig wh-ic'h is boltedto head and is provided with T-slots 14:, to provide for the atachmen ther to .oaf he die .in. varipus.

positions as may be required" in breaking blanks of different lengths. It is a vitally important feature of the present inventlon Specification of Letters Patent.

Patented. Nov. ,12,.11918.

Application fi1ed-May 10, 1918: SerialNo. 238/196.

that a plurality ofr-bars arebrokensuecessivel-y at each actuation of the'mecha-nism.

This is effected through the peculiar construction of the die, the configuration of which i will be-readily understood fromFigs. 1 and The two distinguishing characteristics of the die are, first, that its operativeface comprises a plurality of steps, indicated by 33-, these steps lying in parallel planes and transversely-to the long dimension of the die, and second, that theoperative face of each step inclines slightly-fromthe front (2'. 0., from the direction of the feed) backward and downward toward the rear, the rear end of each step being slightly lower than-the front end. This: is in order togive the greatest possible leverage by insuring that tlie breaking force of the die'will be applied at the greatest possible distance from the'nioking or scoring. 'I hedie is secured to the=jig' by means o-fbolts 19, the heads of which engage one of the T-slots inthe jig; and which pass through flanges 20" at the ends of the die, the die beingsecured in place nuts-21, engaging the bolts and bearing against the flanges.

16 denotes-the knife or anvil, which is seated in a knife block 17, itself resting-upon a block-1S. The knife is of'course heavy, the

cutting edge lying preferably in the horizontal plane and on the far side from the direction of-the feed, as will'beunderstood from Fig; 3. In front of the knife, the knife block stands the, full height of the edge which ives a support for the bars while-being-operated upon by the die, this support beingindicated by 32. Beyond the-knife, the-knife block is cut away so that when the bars are-broken the. blanks drop away from the knife, asindicated in Fig. 3. The nicked or scored bars, indicatedby 22, arefed in over, a suitable table, indicated by 28; The bars may be moved forward by any suitable feeding mechanism, which is not illustrated, as specifically it forms no part. ofthe present invention, which simply requires; that the bars-be fed forward uniformly when the die rises.

As a means of retaining the bars securely in place for the breaking operation, Ij'provide atapering, clamping bar 24, which is adapted to be reciprocated in a tapering slot farthest in the sense of'the direction of engage slots 28 in links 29, the upper ends of which are pivoted to ears 30 extending from the block. One of the links is provided with a handle 31, for convenience in operation.

The operation of the mechanism as a whole will be readily understood-from the drawing. The work is fed in from the left, as seen in "Figs. 1 and 3. -The left side, as

seen in these views, is therefore considered as the front of the machine and the right side as the rear.

The words rear and rear edge, therefore, as used in this s ecification mean the side or edge farthest rom the left as seen in Figs. 1 and 3, that is feed. When the die is raised, as in Fig. 1, the clamping bar is loosened by means of the handle and the bars are fed rearward the required distance, which of course places the next nicks or scorings in position to regis- The operator then by means of the handle operatesthe clamping bar and clamps the bars se-= ter with the edge of the knife.

curely. As both the clamping bar and the slot in which it is seated are inclined slightly forward and downward, it follows that as the bar is moved forward the .wedgingaction of the inclines of the slot and the bar will force the latter downward and cause it to grip securely the bars to be operated upon. -It will be noted that in operation.-

, the portion of each bar that is to be broken off to form a blank, projects beyond the.

knife and is unsupported, the knife block bein [cut away on that side. The end of the ar back of the nick or scoring, however, in addition to bearing upon the edge of the knife is supported firmly by the knife block itself, upon which the bars to be operated upon are clamped by the clampin bar. When the die moves downward, it wil be obvious from Fi will be engaged successively not simultaneously, but that an instant after the first bar, counting from the left as seen in Fig.

2, has been broken by the lowest step in the die, the second bar will be engaged by the second step, and so on until the bars are all broken. It is important, however, that the entire force of the press is delivered 1 upon each bar individually, so that with my present construction of die no more power' is required to break a plurality of-bars at each actuation of a hydraulic press than has heretofore been used to break a single bar.

the front backward and downward toward 2, that thebars said links having a handle Another important feature is that the. greatest possible leverage of the die is utilized by causing the die to incline from prising a knife.having its end in the horizontal plane, a die comprising a series of steps, each step being an incline lowest at its rear edge, and means for clamping a plurality of bars while being acted upon by the die.

3. Mechanism for breaking steel bars comprising a knife having its edge in the horizontal plane, a die comprising a series of steps, each inclining downward from the direction of feed for the purpose set forth, a knife block which supports the rods before the knife and iscut away beyond the knife, and a clamping bar by which the bars are clamped upon the knife block before the knife.

4. Mechanism for breaking steel bars C0111 prising a knife, means for holding a plurality of bars while being operated upon, and

a'die comprising a series of steps adapted to act on the bars successively, each step being lowest at itsrear end.

5. Mechanism for breaking steel bars co1nprising a knife, a knife block having a sup port for the bars, an inclined clamping bar cooperatin with the support, a block having an inc ined slot in which the clamping bar may reciprocate, and links on which the clamping bar is suspended, the inclines oftthe clamping bar and slot-causing the bars to be operated upon to be gripped between the support and the clamping bar when the latter is moved forward.

6. Mechanism for breakin steel bars comprising a knife, a block in w ich it is seated and which is provided before the knife with a support for the bars, an inclined clamping bar, a block having an inclined slot in which which the clamping bar is sus )ended, one of by which the clamping bar is operated to hold the bars in place and a die comprising a series of steps which cooperate with the knife to break the bars successively.

In testimony whereof I aflix my signature.

CHARLES A. GLOVER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G.

the clamping bar may reciprocate, links by 

